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3 years ago

PLSSSSS HELP ASAP!!!! PLS ANSWER LIKE ALL OF EM COST 10 points!!!

Mathematics

1 answer:

docker41 [41]3 years ago

6 0

Part A:

Electricity Company | Rate Charged | Rate Rounded |

Atlas Energy 12.065 12.070

Big City Light 9.138 9.140

Connex 9.143 9.140

Dynamon Power 9.707 9.710

ElectriCo 9.503 9.500

Part B:

Big City Light and Connex.

Part C:

Two companies can have the same rate when they are rounded because two numbers can be rounded to the same number although they are different numbers. For example; 9.138 and 9.143 can both be rounded to 9.140.

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Tony wants to purchase a baseball glove for $14.96, a baseball bat for $19.87, and a baseball for $5.37. He figured out that he

Vanyuwa [196]

Reasonable because the three items altogether cost about $40

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4 years ago

Integrate dx/3sinx+4cosx

german

$\displaystyle\int\frac{\mathrm dx}{3\sin x+4\cos x}$

A standard approach would be the tangent half-angle substitution:

$t=\tan\dfrac x2\implies\mathrm dt=\dfrac12\sec^2\dfrac x2\,\mathrm dx$

Then

$\sin x=2\sin\dfrac x2\cos\dfrac x2\implies\sin x=\dfrac{2t}{1+t^2}$

$\cos x=\cos^2\dfrac x2-\sin^2\dfrac x2\implies\cos x=\dfrac{1-t^2}{1+t^2}$

from which we get

$\mathrm dx=\dfrac2{1+t^2}\,\mathrm dt$

So the integral becomes

$\displaystyle\int\frac{\frac2{1+t^2}}{\frac{6t}{1+t^2}+\frac{4(1-t^2)}{1+t^2}}\,\mathrm dt=\int\frac{\mathrm dt}{3t+2(1-t^2)}=-\int\frac{\mathrm dt}{2t^2-3t-2}$

Rewrite the denominator as

$2t^2-3t-2=(2t+1)(t-2)$

and expand the integrand into its partial fractions:

$\dfrac1{2t^2-3t-2}=\dfrac15\left(\dfrac1{t-2}-\dfrac2{2t+1}\right)$

We have

$\displaystyle-\frac15\int\frac1{t-2}-\frac2{2t+1}\,\mathrm dt=-\frac15(\ln|t-2|-\ln|2t+1|)+C$

$=\dfrac15\ln\left|\dfrac{2t+1}{t-2}\right|+C$

$=\dfrac15\ln\left|\dfrac{2\tan\frac x2+1}{\tan\frac x2-2}\right|+C$

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3 years ago

Can anyone solve this problem ?

Katyanochek1 [597]

Answer:

defectionist forme solb ifv

3 0

2 years ago

A bird was flying and saw a bunch of others and said to them, hello one hundred, and one of the birds from the bunch said we nee

rodikova [14]

Answer:

hey!

you said:

A bird was flying and saw a bunch of others and said to them, hello one hundred, and one of the birds from the bunch said we need twice the number of us and one of you (The bird flying) to be one hundred, and now my question is how many birds were flying, (not in total) but before the bird who was flying saw them.

Step-by-step explanation:

i think that the answer is 49.5 bids were flying because there needs to be tice the number plus 1 to get to 100. iknow there cant be 49.5 birds so round it up to 50 and plus the bird i see that there may have been 50 birds flying.

hope this helps

pls put brainliest

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4 years ago

A local hamburger shop sold a combined total of 622 hamburgers and cheeseburgers on Sunday. There were 72 more cheeseburgers sol

zzz [600]

622-72=550 550 hamburgers were sold on sunday

5 0

4 years ago

Read 2 more answers